Retention spoon



FIG. 1 is a top plan view of a retention spoon showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left perspective view thereof; and,

FIG. 4 is a right side elevational view thereof, the left side being a mirror image.

The broken line showing of a spoon handle in FIGS. 1-4 is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a retention spoon, as shown and described. 